CN108708283B - Method for installing bridge prestressed porous anchorage - Google Patents
Method for installing bridge prestressed porous anchorage Download PDFInfo
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- CN108708283B CN108708283B CN201810499769.0A CN201810499769A CN108708283B CN 108708283 B CN108708283 B CN 108708283B CN 201810499769 A CN201810499769 A CN 201810499769A CN 108708283 B CN108708283 B CN 108708283B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for installing a bridge prestressed porous anchorage, which comprises the following steps: installing a working anchor, and locking the working anchor and the steel strand by adopting a clamping piece after the working anchor moves to a position required by design; separating and carding each steel strand through a deconcentrator, after adjusting the pore channel angle of a limiting plate, enabling the steel strands to pass through one by one, dismantling the deconcentrator, and moving the limiting plate to a design required position; penetrating all the steel strands into a jack, and moving the jack to a position required by design; separating and carding each steel strand through the deconcentrator, removing the deconcentrator after the steel strands pass through a tool anchor pore passage, and locking the working anchor and the steel strands by adopting a clamping piece after the tool anchor moves to a position required by design; the deconcentrator can be mounted and dismounted for many times in the installation process of the porous anchorage device, so that the installation and construction time of the porous anchorage device is effectively shortened, and the tensioning working efficiency of the prestressed steel strands is improved.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a method for installing a bridge prestressed porous anchorage device.
Background
The prestress is called a life line of a large-span bridge, and the multi-hole group anchor is more and more widely applied to engineering. The traditional anchorage installation method is that steel strands in a bundle are numbered, and then a working anchor, a limiting plate, a tensioning jack and a tool anchor are sequentially installed to avoid the steel strands from being wound in a staggered mode. However, the greater the number of holes, the more steel strands, and the greater the difficulty of anchor installation. And all belong to high altitude construction in cantilever cast in situ continuous roof beam work process, the installation of ground tackle is difficult to operate, and consuming time is longer. According to the field construction statistics, the installation of the working anchor, the limiting plate, the jack and the tool anchor of one bundle of 15 steel strands at least takes more than 30-45 minutes, and the tensioning construction efficiency is severely limited.
When the installation of limiting plate and instrument anchor is carried out in actual construction, because the sequencing of work anchor to the steel strand wires has been confirmed, and each steel strand wires generally differ in length, the steel strand wires serial number mistake of installation easily appears when installing limiting plate and instrument anchor through the steel strand wires tip, and the dislocation is worn to adjacent steel strand wires, can lead to the emergence of phenomenons such as tensile in-process steel strand wires winding even.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that the method for installing the bridge prestressed porous anchorage comprises the following steps:
s1, installing a working anchor, and locking the working anchor and the steel strand by using a clamping piece after the working anchor moves to a position required by design;
s2, separating and carding the steel strands through a wire divider, adjusting the hole channel angle of a limiting plate, then enabling the steel strands to pass through one by one, detaching the wire divider, and moving the limiting plate to a design required position;
s3, penetrating all the steel strands into a jack, and moving the jack to a position required by design;
and S4, separating and combing the steel strands through the wire dividers, removing the wire dividers after the steel strands penetrate through the tool anchor pore passages one by one, and locking the working anchor and the steel strands by adopting clamping pieces after the tool anchor moves to a position required by design.
Preferably, the deconcentrator includes the mounting that sets up in pairs, the mounting is the fork form, the mounting includes a plurality of strip isolation parts and connects the connecting portion of isolation part, and is adjacent set up the clearance between the isolation part, the isolation part keeps apart the steel strand wires and will the steel strand wires set up in the clearance.
Preferably, the splitter is divided by the fixing part including a first fixing part and a second fixing part, the first fixing part is inserted into the steel strand, the steel strand on the same plane is arranged in the same gap, and the first fixing part divides the steel strand in a plurality of regions; and inserting the second fixing piece and the first fixing piece into the steel strand in a crossed manner, separating the steel strand arranged in the same region by the first fixing piece by the second fixing piece again, wherein the adjacent isolating parts of the first fixing piece and the adjacent isolating parts of the second fixing piece are mutually crossed to form through holes, and the steel strand is separated in different through holes by the isolating parts.
Preferably, after the fixing piece is used for separating the steel strands in a crossed manner, the fixing piece is moved from the working anchor mounting position to the tool anchor mounting position until the end of the steel strand, so that the steel strand is combed by the deconcentrator.
Preferably, the deconcentrator is further provided with a connecting assembly, and the first fixing piece and the second fixing piece can be detachably connected through the connecting assembly.
The preferred, coupling assembling includes first joint portion and second joint portion, first joint portion sets up the connecting hole, second joint portion sets up a plurality of joint pieces, the joint piece with the connecting hole corresponds the setting, through with joint piece card inserts thereby realize in the connecting hole first joint portion with the connection of second joint portion.
Preferably, the connecting hole sets up to the round hole, joint piece annular equipartition, the joint piece sets up supporting part and fixed part, the fixed part passes through the supporting part is fixed the mounting on the surface, the fixed part passes through the deformation of supporting part takes place the position change.
Preferably, the maximum distance between the supporting parts is smaller than the diameter size of the connecting hole, the maximum distance between the fixing parts is larger than the diameter size of the connecting hole, and the fixing parts can penetrate through the connecting hole and be clamped with the edge of the connecting hole under the condition that the supporting parts are deformed.
Preferably, the fixing portion is provided with a chamfer surface, the chamfer surface is provided with an arc surface, and the chamfer surface is inclined and inwardly gathered along the direction far away from the supporting portion.
Preferably, the second clamping portion is further provided with a pressing block, the pressing block is arranged on a central axis of the clamping block in an annular and uniform distribution mode, the pressing block is connected with the fixing portion, and a connecting portion of the pressing block and the fixing portion can be flexibly deformed.
Compared with the prior art, the invention has the beneficial effects that: the structure of the deconcentrator can be assembled and disassembled for multiple times in the installation process of the multi-hole anchorage device, so that the steel strand is ensured to be positioned in a separated mode, the deconcentrator is convenient to disassemble, the influence on the movable installation of the limiting plate and the tool anchor is avoided, the installation and construction time of the multi-hole anchorage device is effectively shortened, and the tensioning working efficiency of the prestressed steel strand is improved; and 2, the second fixing piece and the first fixing piece are arranged in a split manner, and the deconcentrator can properly adjust the crossed included angle between the second fixing piece and the first fixing piece on site according to the specific model of the porous anchorage device so as to realize better separation positioning effect of the deconcentrator.
Drawings
FIG. 1 is a schematic view illustrating a step S1 of the installation method of the bridge prestressed porous anchorage device;
FIG. 2 is a schematic view illustrating a step S2 of the installation method of the bridge prestressed porous anchorage device;
FIG. 3 is a schematic view illustrating a step S3 of the installation method of the bridge prestressed porous anchorage device;
FIG. 4 is a schematic view illustrating a step S4 of the installation method of the bridge prestressed porous anchorage device;
FIG. 5 is a structural diagram of the first embodiment of the splitter;
FIG. 6 is a structural diagram of a second embodiment of the splitter;
FIG. 7 is a cross-sectional view of a second embodiment of the connecting assembly;
fig. 8 is a structural front view of a third embodiment of the connecting assembly.
The figures in the drawings represent:
1-a splitter; 2-steel strand wires; 3-a working anchor; 4-a limiting plate; 5-a jack; 6-a tool anchor; 11-a spacer; 12-a connecting part; 13-a through hole; 14-a first fixture; 15-a second fixture; 16-a connecting assembly; 161-a first clamping part; 162-a second clamping part; 163-connection hole; 164-a clamping block; 165-a support; 166-a fixed part; 167-chamfering the face; 168-a release.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
Example one
As shown in fig. 1 to 4, the method for installing the bridge prestressed porous anchorage comprises the following steps:
s1, installing a working anchor 3, and locking the working anchor 3 and the steel strand 2 by using a clamping piece after the working anchor 3 moves to a position required by design;
s2, separating and carding the steel strands 2 through a wire divider 1, adjusting the pore channel angle of a limiting plate 4, then enabling the steel strands 2 to pass through one by one, dismantling the wire divider 1, and moving the limiting plate 4 to a position required by design;
s3, penetrating all the steel strands 2 into a jack 5, and moving the jack 5 to a position required by design;
and S4, separating and combing the steel strands 2 through the deconcentrator 1, removing the deconcentrator 1 after the steel strands 2 pass through the pore passages of the tool anchor 6 one by one, and locking the working anchor 3 and the steel strands 2 by using clamping pieces after the tool anchor 6 moves to a position required by design to complete the installation of the multi-hole anchorage device.
As shown in fig. 5, fig. 5 is a structural diagram of the splitter according to this embodiment; deconcentrator 1 is including the mounting that sets up in pairs, the mounting is the fork form, the mounting includes a plurality of strip pars partita 11 and connects connecting portion 12 of pars partita 11, it is adjacent set up the clearance between pars partita 11, pars partita 11 is used for keeping apart steel strand 2 and will steel strand 2 sets up in the clearance, the quantity of pars partita 11 basis steel strand 2's quantity sets up, the preferred, it is pairwise the mounting sets up alternately, thereby causes two the mounting 11 intercrossing of pars partita 11 forms the latticed that has a plurality of cubic through-holes, through-hole 13 sets up steel strand 2, thereby guarantees deconcentrator 1 is right steel strand 2's separation effect.
Preferably, the fixing member comprises a first fixing member 14 and a second fixing member 15, the first fixing member 14 is inserted into the steel strand 2, and the steel strand 2 in the same horizontal plane or the same plane is arranged in a space between adjacent isolation parts 11, that is, the first fixing member 14 divides the steel strand 2 into a plurality of areas; and then inserting the second fixing piece 15 into the steel strand 2 in a manner of crossing the first fixing piece 14 at an included angle, separating the steel strand 2 arranged in the same area by the first fixing piece 14 by the second fixing piece 15 again, wherein the adjacent isolating parts 11 of the first fixing piece 14 and the adjacent isolating parts 11 of the second fixing piece 15 cross each other to form through holes 13, and separating the steel strand 2 in different through holes 13 by the isolating parts 11. Preferably, the steel strands 2 correspond to the through holes 13 one to one, that is, one steel strand 2 is arranged in one through hole 13.
Preferably, the first fixing member 14 and the second fixing member 15 are arranged perpendicularly and crosswise, that is, the first fixing member 14 is arranged horizontally, and the second fixing member 15 is arranged vertically, so that the fixing members can position the steel strand 2 in a spaced manner.
Specifically, will the mounting is alternately kept apart behind the steel strand wires 2, through with the mounting is followed 3 mounted positions of work anchor to 6 mounted directions of instrument anchor remove, thereby realize deconcentrator 1 is right the carding of steel strand wires 2 guarantees at each the steel strand wires 2 are the sequence of arranging of tip position, guarantee steel strand wires 2 can pass one by one limiting plate 4 with in the pore that the instrument anchor 6 corresponds, avoid adjacent steel strand wires 2 dislocation or winding phenomenon.
The deconcentrators 1 are arranged in pairs, so that the deconcentrators 1 can be conveniently mounted and dismounted; compared with the existing integrated deconcentrator 1 structure, the deconcentrator 1 structure can be mounted and dismounted for multiple times in the porous anchorage device mounting process, the separation and positioning of the steel strands 2 are guaranteed, meanwhile, the disassembly is convenient, the influence on the moving and mounting of the limiting plate 4 and the tool anchor 6 is avoided, the mounting and construction time of the porous anchorage device is effectively shortened, and the tensioning working efficiency of the prestressed steel strands 2 is greatly improved.
The deconcentrator 1 can be formed by processing steel bars with the diameter phi of 8, is simple to manufacture, easy to obtain materials and reusable, and the isolation parts 11 have certain elastic deformation quantity to ensure that the size of the through holes 13 can be adjusted to adapt to different pore channel arrangement states of the porous anchorage device. The second fixing part 15 and the first fixing part 14 are arranged in a split manner, and the junction box 1 can properly adjust the intersection included angle between the second fixing part 15 and the first fixing part 14 on site according to the specific model of the multi-hole anchorage device so as to realize better separation positioning effect of the junction box 1.
Example two
As shown in fig. 6, fig. 6 is a structural diagram of the splitter according to this embodiment; the deconcentrator 1 is further provided with a connecting assembly 16, and the first fixing piece 14 and the second fixing piece 15 can be detachably connected through the connecting assembly 16.
Coupling assembling 16 includes first joint portion 161 and second joint portion 162, first joint portion 161 with second joint portion 162 sets up respectively first mounting 14 with on the second mounting 15, first joint portion 161 sets up connecting hole 163, second joint portion 162 sets up a plurality of joint pieces 164, joint piece 164 with connecting hole 163 corresponds the setting, through inciting somebody to action joint piece 164 joint income thereby realize in the connecting hole 163 first joint portion 161 with the connection of second joint portion 162. The first clamping portion 161 and the second clamping portion 162 can be arranged as handles connected with the connecting portion 12 and forming a certain included angle with the connecting portion 12, so that the first fixing member 14 and the second fixing member 15 can be taken conveniently; the first fixing member 14 and the second fixing member 15 generally need to be used correspondingly and in pairs, and the connecting assembly 16 connects the first fixing member 14 and the second fixing member 15 to facilitate the placement and the taking of the splitter 1.
As shown in fig. 7, fig. 7 is a structural diagram of the connecting component according to the present embodiment; preferably, the connection holes 163 are circular holes, the clamping blocks 164 are annularly and uniformly distributed, the clamping blocks 164 are provided with a supporting portion 165 and a fixing portion 166, and the fixing portion 166 is fixed on the surface of the first fixing member 14 or the second fixing member 15 through the supporting portion 165. Supporting part 165 adopts the elastic material preparation, thereby realizes through the deformation of supporting part 165 the change in position of fixed part 166 is guaranteed fixed part 166 passes the connecting hole 163 is realized fixed part 166 with the joint of connecting hole 163.
The maximum distance between the supporting parts 165 is smaller than the diameter of the connecting hole 163, the maximum distance between the fixing parts 166 is larger than the diameter of the connecting hole 163, and the fixing parts 166 can pass through the connecting hole 163 and be clamped with the edge of the connecting hole 163; just first joint portion 161 with during the joint of second joint portion 162, first joint portion 161 with second joint portion 162 still can rotate relatively, promptly first mounting 14 with when second mounting 15 is connected, first mounting 14 with second mounting 15 can rotate relatively.
Because in the actual work progress, steel strand wires 2 are generally in anomalous winding or curved state, just steel strand wires 2 material is harder, is adopting deconcentrator 1 is right when steel strand wires 2 comb the operation, first mounting 14 with the intersection contained angle between the first mounting 14 easily changes, coupling assembling 16's setting is guaranteeing first mounting 14 with second mounting 15 connected state is promptly deconcentrator 1 is right when the separation location effect of steel strand wires 2 preferred, be convenient for comb the operation in-process deconcentrator 1's removal is combed, avoids deconcentrator 1 with the card of steel strand wires 2 dies the condition.
EXAMPLE III
The third embodiment is further improved on the basis of the second embodiment in that the second engaging portion 162 is further provided with a release portion 168.
As shown in fig. 8, fig. 8 is a structural diagram of the connecting component according to the present embodiment; the tripping part 168 is provided with a pressing block which is arranged on a central axis of the clamping block 164 which is annularly and uniformly distributed, the pressing block is connected with the fixing part 166, the connecting part of the pressing block and the fixing part 166 is in a film shape or a line shape, namely, the connecting part of the pressing block and the fixing part 166 can be flexibly deformed, when the pressing block is stressed, the connecting part can uniformly transmit the acting force to the fixing parts 166, the fixing part 166 is stressed to cause the supporting part 165 to be elastically deformed, the fixing part 166 is folded towards the pressing block, so that the maximum distance between the fixing parts 166 is smaller than the diameter of the connecting hole 163, and the first clamping part 161 and the second clamping part 162 are separated.
The release portion 168 is provided to facilitate the user to release the clamping state between the first fixing member 14 and the second fixing member 15, thereby realizing the detachment of the wire distributor 1.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be understood by those skilled in the art that various changes, modifications and equivalents may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. A method for installing a bridge prestressed porous anchorage device is characterized by comprising the following steps:
s1, installing a working anchor, and locking the working anchor and the steel strand by using a clamping piece after the working anchor moves to a position required by design;
s2, separating and carding the steel strands through a wire divider, adjusting the hole channel angle of the limiting plate, then enabling the steel strands to pass through one by one, detaching the wire divider, and moving the limiting plate to a design required position; wherein the deconcentrator comprises fixing pieces and a connecting component which are arranged in pairs, the fixing pieces which are arranged in pairs are detachably connected through the connecting component, the connecting component comprises a first clamping part and a second clamping part which are clamped together, the first clamping part is provided with a connecting hole, the second clamping part is provided with a clamping block, the clamping block and the connecting hole are correspondingly arranged, the clamping block is suitable for being clamped into the connecting hole and is provided with a supporting part and a fixing part, the fixed part is fixed on the surface of the fixed part through the supporting part, the second clamping part is also provided with a pressing block, the pressing block is arranged on a central axis of the clamping block which is annularly and uniformly distributed, the pressing block is connected with the fixing part, and the connecting part of the pressing block and the fixing part can be flexibly deformed;
s3, penetrating all the steel strands into a jack, and moving the jack to a position required by design;
and S4, separating and combing the steel strands through the wire dividers, removing the wire dividers after the steel strands penetrate through the tool anchor pore passages one by one, and locking the working anchor and the steel strands by adopting clamping pieces after the tool anchor moves to a position required by design.
2. The method for installing the bridge prestressed porous anchorage device according to claim 1, wherein the fixing member is in a fork shape, the fixing member includes a plurality of strip-shaped isolation portions and connecting portions for connecting the isolation portions, gaps are provided between adjacent isolation portions, and the isolation portions isolate the steel strands and arrange the steel strands in the gaps.
3. The method for installing the bridge prestressed porous anchorage device according to claim 2, wherein the wire dividers are separated by a process that the fixing members comprise a first fixing member and a second fixing member, the first fixing member is inserted into the steel strands, the steel strands in the same plane are arranged in the same gap, and the first fixing member separates the steel strands in a plurality of regions; and inserting the second fixing piece and the first fixing piece into the steel strand in a crossed manner, separating the steel strand arranged in the same region by the first fixing piece by the second fixing piece again, wherein the adjacent isolating parts of the first fixing piece and the adjacent isolating parts of the second fixing piece are mutually crossed to form through holes, and the steel strand is separated in different through holes by the isolating parts.
4. The method for installing the prestressed multi-hole anchorage device for bridge according to claim 3, wherein after the fixing member is crossed and separated from the steel strand, the fixing member is moved from the work anchor installation position to the tool anchor installation position to the end of the steel strand, thereby completing the carding operation of the steel strand by the wire divider.
5. The method for installing the bridge prestressed multi-hole anchorage of claim 1, wherein the connection holes are circular holes, the clamping blocks are annularly and uniformly distributed, and the fixing portion is changed in position through deformation of the supporting portion.
6. The method for installing a bridge prestressed multi-hole anchorage device according to claim 5, wherein the maximum distance between the supporting portions is smaller than the diameter of the connection hole, the maximum distance between the fixing portions is larger than the diameter of the connection hole, and the fixing portions can pass through the connection hole and be engaged with the edge of the connection hole in a deformed state of the supporting portions.
7. The method for installing the bridge prestressed multi-hole anchorage of claim 5, wherein the fixing portion is provided with a chamfer surface, the chamfer surface is provided with an arc surface, and the chamfer surface is inclined and inwardly converged in a direction away from the supporting portion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499769.0A CN108708283B (en) | 2018-05-23 | 2018-05-23 | Method for installing bridge prestressed porous anchorage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810499769.0A CN108708283B (en) | 2018-05-23 | 2018-05-23 | Method for installing bridge prestressed porous anchorage |
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| CN108708283A CN108708283A (en) | 2018-10-26 |
| CN108708283B true CN108708283B (en) | 2020-12-11 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109680807A (en) * | 2019-01-25 | 2019-04-26 | 华汇工程设计集团股份有限公司 | Anchor structure and method of the pre-tensioning system Prefabricated superposed beam steel strand wires in bean column node |
| CN111472282B (en) * | 2020-04-23 | 2021-03-19 | 乔磊 | Prestressed anchorage utensil is used in road bridge construction |
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| CN105090614A (en) * | 2015-05-27 | 2015-11-25 | 海信（山东）冰箱有限公司 | Wire harness fixing clamp and electric appliance |
| CN206956562U (en) * | 2017-07-06 | 2018-02-02 | 中铁上海工程局集团有限公司 | A kind of steel strand wires beam splitting arrangement |
| CN107975240A (en) * | 2017-11-30 | 2018-05-01 | 中国冶集团有限公司 | One kind moves back anchor two times tensioning device and its construction method |
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2018
- 2018-05-23 CN CN201810499769.0A patent/CN108708283B/en active Active
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| KR100982974B1 (en) * | 2009-12-21 | 2010-09-17 | (주)아이브릿지코리아 | Method for manufacturing multi-span continuous re-prestressed preflex composite bridge |
| CN202055255U (en) * | 2011-05-11 | 2011-11-30 | 葛洲坝集团第二工程有限公司 | Stranded wire comb |
| CN103184799A (en) * | 2013-03-20 | 2013-07-03 | 中国核工业华兴建设有限公司 | Special steel comb for penetration and installation of prestressing steel strands and using method thereof |
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